102003173 has 2 divisors, whose sum is σ = 102003174. Its totient is φ = 102003172.

The previous prime is 102003151. The next prime is 102003193. The reversal of 102003173 is 371300201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76772644 + 25230529 = 8762^2 + 5023^2 .

It is a cyclic number.

It is not a de Polignac number, because 102003173 - 2¹² = 101999077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102003193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51001586 + 51001587.

It is an arithmetic number, because the mean of its divisors is an integer number (51001587).

Almost surely, 2^102003173 is an apocalyptic number.

It is an amenable number.

102003173 is a deficient number, since it is larger than the sum of its proper divisors (1).

102003173 is an equidigital number, since it uses as much as digits as its factorization.

102003173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 102003173 is about 10099.6620240481. The cubic root of 102003173 is about 467.2377176543.

Adding to 102003173 its reverse (371300201), we get a palindrome (473303374).

The spelling of 102003173 in words is "one hundred two million, three thousand, one hundred seventy-three".